No one should afraid of making a duel install, the only issue some ppl could have is that it requires an additional 549 MB of space on the HD.
I combined Skies and anars methods:
1 - Clean up the Sav dir, if you are like me and don't clean up savs often that is a lot of MB.
2 - Just make sure a Saves dir and a Saves\Auto dir stay in place.
3 - Select Civ3PTW leftside in Windows Explorer, right click Conquests in the righthand pane, copy and immed. paste. Copy of Conquests is created. Rename it to something like Conquests115.
4 - Apply the patch. The installation will ask to replace some files, JFDI.
Now for the hardest part:
5 - Find the entry in your Programs Menu called "Play Conquests!"
6 - Right click and select Create Shortcut. An entry like "Play Conquests! (2)" will be created in the same menu.
7 - Right click the new shortcut and select Rename and rename it to something that is a clear reminder this shortcut will start 1.15.
8 - Rightclick the renamed shortcut. Select Properties.
9 - Under the Shortcut tab there is an entry Target and an entry Start in. Both point to a dir called Conquests.
10 - Rename the Conquests dir in both entries to the exact name choosen in step 3. In this case Conquests115. Don't rename the Civ3Conquests.exe!
11 - Click OK, that's all!
No dir renaming anymore, just use shortcuts to start the version you want.
Some findings:
- Can't run 1.15 and 1.22 simultaneously
- But can run / exit between versions without rebooting
- Could not load 1.15 savs in 1.22
- Could load the biq for Aggie vs Sky
- I am fucking tired and have to go
soon and Aggie vs Sky is delayed 'til Tue